Dissolving-shutter for kinetoscopes.



J. H. GROSIER, DISSOLVING SHUTTER FOR KINETOSOOPES.

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7 919 324 Patented Apr.27, 1909.

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u I Application 'fiiea'mi ust 13,1908. Serial nemesis To all whom it may concern Be it known'that I, JOHN ll. CROSIER, a citizen of the United States, residing at the i i city of Philadelphia, in the county .of Philadelphia and State of Pennsylvania, have invented, certain new and useful Improvements y The prior art disclosesfjtypes of means claiming to',.obv1ate fhckermgs in moving and back faces adjacent-said edges rendered l in whichlarged, of a dissolving shutter embodying the v View on the line as, w, of Fig. 1, showing an preferred manner of arranging the same.

and only the objects or figures movable,

ner hereinafter described and claimed.

in Diss0lvingSl 1u'tters for Kinetosc opes; of; which the following is a specification;

My invention has relation to a shutter for dssolving'one moving object or picture into ith'er. iii throwing them onto a screen and thereby avoiding as far as possible, visible flickerings of the projected object orp'ic'ture i both as to background or-fiehl and objects t or figures.-

picture machines by the Letters Patent No.

112, of October According to my present invention the dissolving shutter, consists of a sectorshaped'semi-transparent body having opaque central strips on both sides thereof and having the radial edges thereof and both front opaque;

The shutter is adapted to be mountedon a driven shaft and to be rotated at preferably greater speed than the pictures upon the film are being projected, whereby to allappearances the background or field of the pictureproje'oted appears to the eye as fixed within thefield or background, but without visible fiickerings and with high lights about the objects or figures sharply defined. -My present invention stated in general, terms, consists of a dissolving shutter constructively arranged in substantially the man- Thenature and scope of my invention will be more fully understood fromthe following description taken in 'connectionwiththe accompanying drawings forming part hereof,

Figure 1, is a front elevational view enessential main features of this invention and adapted for application to anytype of kinetoscope and Fig. 2, is a transverse sectional Specification of Letters Patent.

composed of brass or any other metal.

- servable. i

Patented'hpzil 27, 1909.

Referring to the. drawings-2, represents the shutter, consisting-of a sectdr shaped semi-transparentbody 3, having two centralopaque strips 4 and 5, on opposite sides. and secured thereto. Thesectori-like body, 3, preferably consists of either a decidedly yellowish mica, or adccidedly white or grayish'mica, j'lhe opaquestrips 4 and 5, may be' The respective strips are preferably, arranged so as, to taper from the inner ends where they are formed into a hub S, tothe outer free end. The hub 8, is adapted tobe mounted on and driven by the shaft of any kinetoscope, forexample, of the type of that illustrated in the U. S. Patent No. 722,382. The radial edges 6 and 7, of the body3, well as the front and back faces of the body adjoining such edges are, respectively, coated with shellac or other suitable material to render such edges o, 7, substantially o aque.

In practice it has been fully emonstrated that if the said dissolving shutter is revolved at preferably a speed two or more times greater than the moving picture film is being passed in the path of an intense light and the .ens of a kinetoscope, the film reproduction upon the screen will appear without visible fhckcrings, and hence without annoyance to the spectators who are viewing the picture upon the screen.

In viewing moving pictures on a screen according to my invention backgrounds or fields of all such appear to the eye as fixed and only the objects or figures as movable; and moreover both are more clearly or sharply defined are also high lights and "polorings in the moving projected pictures.

in instances, where printed matter is pre sented in high light upon dark grounds visile flickerings to the eye of such arereduced to such an extent as to be practically unob- The described dissolving shutter of my said invention is adapted to be revolved in, a kinetoscopebetween the traveling film in fluenced by an intense light and the lens of the machine for magnifying the picture to be projected upon a screen for accomplishing the purpses of my said invention.

The s rutter of my invention is adapted for usein any of the well known types of ma chines for effectively obviating flickerings in presenting a moving iicture on a screen.

Having thus descrr ed the nature and obtially 20 substantially jecrs of my invention, what I claim as new and desire to secure by Letters ,l"atent 1s: 1. A dissolving shutter for lnnetoscopes,

comprising a semi-transparent sector shaped structure having a radial opaque portion and opaque radial edges, substantially as and for the purposes described.

2. A dissolving CfilllpllSlllf i. seuii-trausparent sector shaped structure liaviug a centralradial opaque portion and opaque radial edges and the front and rear faces adjoining said edges also opaque, substantially as and for the purposes described. 1

3. A dissolving shutter for kinetoscopes, comprising a semi-transparent sector shaped structure having a central radial opaque portion,a hub, and opaque radial edges, substanas and for the purposes described.

4. A dissolving shutter for kinetoscopes, comprising a semi-transparent sector shaped structure having an opaque radial central portion and the front and rear faces adj oining the radial edges of the structure opaque,

as and for the purposes described; I .v i

5. A dissolving shutter for kinetoscopes, comprising a semi-transparent sector shaped structure having a hub, a tapering radial central opaque portion extending to the peripheral edge of the structure, the greatest width of said tapering portion-being adjacent l the hub, opaque radial edges and front and shutter for kinetoscopcs,

rear opaque faces adjoining said edges, substantially as and for the purposes described. 6. A dissolving shutter for lunetoscopes,

comprisinga semi-transparent sector shaped structure having an opaque radial portion tapering to the peripheral edge of'the structure and provided with a hub, the greatest Width of said tapering portion being adjacent the hub,"and with front and rear opaque faces adjoining the radial edges of said structure, substantially as and'for the purposes described. I i

.In witness whereof, I have hereunto set my signature in the presence of two subscribing witnesses. v

JOHN H, OROSIER, Vritnesses: v

' THOMAS M. SMITH, G. M. CONNE ToN. 

